Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1984-08-06
1986-08-12
Anderson, Philip
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
264 39, 264 51, 264 54, 264298, 264338, 264DIG84, 425 89, 425224, 425817C, C08G 1814, B29C 3916, B29C 3942, B29C 6722
Patent
active
046056831
ABSTRACT:
A support surface is formed into a trough, a liquid polymer which expands on reaction is dispensed onto the support surface, and the support surface is inclined to cause flow of the polymer to a region in which the polymer expands. The polymer is introduced onto a supporting liquid which supports the polymer in a zone which is substantially coextensive with at least a major portion of the expansion region. The supporting liquid has a specific gravity higher than that of the polymer, whereby the polymer floats on and advances across the supporting liquid in the form of an expanding mass having left and right sides, a flat bottom and a top which slopes upwardly in the direction of the advance. Conveyors support the expanding mass at the respective left and right sides thereof. The conveyors are submerged in the liquid at their upstream ends, and the direction of advance of their polymer-supporting active surfaces is substantially parallel to the sloping top of the polymeric bun as it expands.
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Anderson Philip
Crest-Foam Corporation
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